Stop motion for core wrapping machines



April 2, 1935. A. BEs

STOP MOTION FOR1CORE WRAPPING MACHINES Filed May 21, 1932 INVENTOR:

flfmand Has. 39, W [Ma y Attys.

Patented Apr. 2, 1935 r UNITED STATES PATENT sm g Armand Bes', Paa t zfifij l g to Oliver Larmuth, Alpraham', near Tarporley, Cheshire, England 1 M Application May 21; 1932, SerialNo. 612,806

In France July 31, 1931 2 Claims. ((1117-45) The present invention has for object a m--' the diameter over which the arms 1 andllcan chanical arrangement which automatically stops sweep. r a machine using a bobbin of textile or analogous This screw is pinned fast on the shaft ltwhich material (paper in rolls, rubber in thread and is driven by means of a key 1'3 which is very 5 so on) as soon as the thread which is being used slidable, by a pulley l5 which itself is driven by 5 unravels or breaks or again as soon as the bobbin the intermediary of a belt by another pulley i5 is full. integral with a main shaft which drives by suit In the new arrangement which is shown by able means the central shafti, and which carries way of example in the accompanying drawing on the other hand any stop mechanism, for exwhich represents the table of a core wrapping ample a stationary pulley i6 and a loose pulley 10 machine in elevation at Fig. 1 and in plan at "5'. Over these pulleys can pass a belt H which Fig. 2 a general support I receives a central connects-with a driving drumdnot shown on spindle 2 held in appropriate bearings. This the drawing) in such a manner thatit passes spindle is integral with a plate 3 which supports between two discs which are fast on the shaft a bobbinl which contains the textile material l3, and can act on the belt in the manner of 15 and ahook for guiding marked 5. On the other a belt fork for disen a ement. his shaft 13 7 side of the plate a member serves to maintain is presumed to'be supported by smooth very soft the equilibrium in order to obtain a regular robearings which can slide.

tation. The extremity of the spindle consists Before starting up this machine the lever 9 of an enlarged portion 2' on which is formed is engaged in the stop of the groove, the thread 20 a screw thread with a long pitch and rounded which comes from the bobbin which is presumed edges. On this part is mounted with suitable to be suitably braked is passed around the guide play, a ring 6 carrying two arms I and 8 of hook and attached to the core which passes into equal weight and well balanced statically and the central hole and which is brought step by dynamically for the speeds under consideration. step upwardly in known manner and according 25 One of the extremities of these arms protrudes as the winding takes place. By attaching this into the interior of the bore of the ring 6 and thread to the core, the ring 6 has b b t engages very freely in the screw thread referred into the position indicated by the full lines (Fig. to here above in such a manner that if this 1) and the thread coming from the bobbin passed ring 6 is threaded on the enlarged portion of through the forks of the arm 1 in such a manner 30 the central spindle by engaging with the internal that the tension of the thread ODD SBS e natu al nipple in the screw thread, the ring 5 in falling t nde y of the ring to s w d w n t s r w by its own weight is compelled to make a, rotary thread and return to the position indicated in movement in the direction of the helicoidal dotted lines. If now the machine is set in rotagroove. tion it is evident that, if the tension of the 35 i o th th hand lever 9 drawn towards thread is sufiicient, the ring and its arms will the exterior by a spring i6 is disposed on 9. t be driven thereby very readily because of the tionary part of the upport I can turn to good 0f part and rea certain extent about an axis The upper sistance to the air. The plane of the arms 7 and extremity of the lever 9 is engaged through a 8 therefore passes above the extremity of the plate I2, likewise secured on the general support, lever this plate being slotted and terminated in a notch It IS presumed by way of f the 9 e 2 132 1 ig zg g from being returned extended on the extremity of the central shaft 45 if iis disposed a shaft '3 is to the left. It is evident that in this'case if the machine turns and the unravelled or broken preferably carrying a screw with deep rectanthread occurs the ring 6 which is free on the gular screw threads l4 disposed opposite the lever axis is no longer driven; it tends to Screw down 9 which is terminated by a heel piece 9 the thickness of Which f less than the depth of the ment the arms strike the lever 9 which through screw th eads. S v On the other hand, the shock is driven out of the stop or notch and, is of suitable length so that its upper end shall drawn by the spring I0, slides in the groove. The

be approximately at the middle of the twoexheel piece 9 of the lever which is rigid and treme positions which the ring 6 can take up in fixed engages in the threads of the screw which and consequently to descend and in this move- 50 V is formed with the rectangular screw threads and marked [3 and which continuously turns through the action of the grooved pulleys l5 and I5 and which consequently force the shaft l3 into a longitudinal displacement movement which Varies with the direction of the thread of the screw. It is here presumed that the direction is such that the shaft whilst turning is drawn according to the direction of the arrow indicating the top of Fig. 2. In this displacement the shaft l3 slides through the pulley I 5 which remains in line with the pulley I5 and drives the discs H which releases the belt by causing it to slide over the loose pulley l6, At this moment the machine stops,'the lever 9' is in an inclined position towards the exterior which indicates that it has operated and the'heel piece 9 which is engaged in the groove at thebottom of the thread of the screw opposes any starting up. It is therefore necessary to re-attach the thread by lifting the ring 6 to its running position and return the lever 9 to its position ofrest. At this moment it is possible to re-engage by displacing the shaft l3 towards the bottom of Fig. 2.

The operation previouslygiven is given by way of illustration but it is obvious that an equally good result would be obtained with a rotation of the plate in a direction contrary to that indicated or by replacing the pulleys I5 and I5 by gear wheels and by replacing the clutch described by any other device having the same object.

Iclaim:

1. In a stop motion for core wrapping ma.- chines, a rotatable spindle, means supporting said spindle, part of said spindle being enlarged, a quick screw thread carried by the enlarged part of said spindle, a ring mounted on said spindle, said ring being movable longitudinally of said spindle, means carried by the ring engaging said screw thread, said ring normally rotating with said spindle, lateral arms carried by said ring, a vertical oscillatory lever, means retaining said lever oscillated in one position, a spring for oscillating said lever in the other position and means causing said ring to traverse the spindle longitudinally to 'stop the machine in the absence of material for winding.

2. In a stop motion for core wrapping machines, a rotatable spindle, means supporting said spindle, part of said spindle being enlarged, a quick screw thread carried by the enlarged part of said spindle, a ring mounted on said spindle, said ring being movable longitudinally of said spindle, means fixed with the ring engaging said screw thread, said ring normally rotating with the spindle, lateral arms carried by said ring, said arms being in equilibrium, means for driving said spindle, a vertical oscillating clutch lever arm, means for retaining said arm in one, oscillated position, and a spring for return movement of said arm, the ring descending along the screw thread upon the absence of driving material. V

ARMAND BEs. 

